CVE-2026-89010

WAVLINK WN535M1 and WN535M3 routers running firmware prior to M35M1_V250922 contain an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary commands as root by sending crafted filenames to the sync_server daemon on TCP port 13136. The daemon interpolates attacker-controlled filename input containing shell metacharacters into a shell command string via sprintf() and passes it to system() without sanitization, enabling root-level command execution on the device.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://docs.wavlink.xyz/Security_Advisory/WAVLINK-SA-2026-091302/
https://github.com/camdsmith/wavlink-sync_server-rce/blob/main/README.md
https://www.vulncheck.com/advisories/wavlink-wn535m1-wn535m3-unauthenticated-os-command-injection-via-sync-server

Configurations

No configuration.

History

29 Oct 2026, 18:17

Type	Values Removed	Values Added
References	~~{'url': 'https://docs.wavlink.xyz/', 'source': 'disclosure@vulncheck.com'}~~	() https://docs.wavlink.xyz/Security_Advisory/WAVLINK-SA-2026-091302/ -

Information

Published : 2026-09-11 15:17

Updated : 2026-10-29 18:17

NVD link : CVE-2026-89010

Mitre link : CVE-2026-89010

CVE.ORG link : CVE-2026-89010

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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